1/25:  Linkage
Link:  Slides (linkage)
Link:  TED (genetics of skin color)  
Link:  Exploratorium (fruit fly mutations)  
Link:  Practice problems (Dihybrid crosses)
Link:  Practice problems (chi square)
Link:  Practice problems (linkage) 
Extra: Simple explanation of Chi-squared with worked example
Extra: Chi square analysis video  

2/7:  Punctuated equilibrium
​slides